Pizza Hut

We called the Pizza Hut to order a pizza. When the pizza was ready the guy said the medium pizza was $20.00. We told him we had never paid that much for the previous times we ordered and go to pick it up. The guy at the register would not correct the mistake. It was like we could give him $20.00 or leave the pizza. So we feel as it if we were taken for some money and that not RIGHT. We were very upset. We, also, feel it is against your policy to overcharge.